Brake mechanism



June 5, 1923.

K. O. WINELL BRAKE MECHANISM Filed July '7 Wilma:

Patented dune 5, i923.

treats earner KARL O. WINELL, OF PITTSBURGH, PENNEYLVAHIA, ASEIGNOPJ TOPRESSED STEEL CAR COMPANY, OF PITTSBURGH, PENNSYLVANIA, A

JERSEY.

CORPORATION OF NEW BRAKE EEECHANISIQ.

Application filed July 7,

To all whom it may concern:

Be it known that I, KARL O. WINELL, a citizen of the United States,residing in Pittsburgh, in the county of Allegheny and State ofPennsylvania, have invented certain new and useful Improvements in BrakeMechanism, of which the following is a specification.

This invention relates to railway truck brakes and has for an object theprovision of means for supporting the brake and for maintaining a brakebeam in such a positlon, when the braking power is released, that theentire faces of the brake shoes will be substantially equidistant fromthe tread of the wheel, and in such a position when the braking power isapplied that the faces of the shoes will be substantially concentricwith the tread of the wheel.

Another object of the invention is to provide means whereby a brakelever and rod of a brake rigging is supported from a brake beam.

A further object of the invention is to provide a brake rigging withmeans for pre venting excessive sidewise movement of a brake lever.

These and other objects will be apparent from the following description.

Referring to the drawings in which like reference characters refer tolike parts, Fig. 1 is a plan view of a portion of a brake applied to arailway car truck and embodying the invention, the truck frame andwheels being shown in dot and dash lines, Fig. 2 is a sectional view ofthe same taken on the line 2.2 of Fig. 1 and Fig. 3 is an endelevational view of the same.

Referring now in detail to the drawings the-reference character 1indicates the truck.

frame which may be of any suitable form or construction, and 2 the truckwheels that are mounted on axles 3 which are rotatably mounted insuitable axle boxes (not shown) mounted in the truck frame.

The reference character 4 indicates the brake which preferably comprisestwo sets of connected levers and rods, one set being arranged at eachside of the truck. Each of 5 these sets comprises a lever 5 which isarranged adjacent one side of the end wheel of the truck and a lever 6which is arranged adjacent the opposite side of the same wheel, whichlevers intermediate their ends are connected by a longitudinallydisposed rod 1921. Serial No. 483,042.

7 The upper end portionof the lever 6 is connected with the upper endportion of a similar lever 6 arranged adjacent one side of an adjacentwheel by rod 8. Adjacent the opposite side of this wheel another lever 6(not shown) is arranged. Intermediate their ends these last mentionedlevers Gare connected through the medium of a rod 9. The upper end ofthe levers 5 are connected with pull rods 10 which rods may be connectedwith the usual equalizing mechanism (not shown).

At each side of each pair of wheels a brake beam 11 is provided whichextends transversely of the truck and at its ends is providedwith brakeheads 12 which in turn are provided with shoes 13 adapted to engage thetread of the wheel when the braking power is applied. At their lowerends, each of the brake levers is connected with one of the brake beams11 preferably through the medium of a member 14L which is secured to rthe brake beam and pivotally connected with the brake lever.

The brake beam adjacent one side of the end pair of wheels is supportedby hangers 15 and 16 while the other brake beams are supported byhangers 17, the upper end portions of all of which are pivotallyconnected with the side frame and the lower end portions are pivotallyconnected with the brake heads. The hangers 15 and 16 are spaced apartin a direction longitudinally of thetruck, the lower end portions of.the hangers 15'being pivotally connected with the brake heads at pointspreferably beyond the outside longitudinal edge of the brake beam andthe lower end portions of the hangers 16 being pivotally connected withthe brake heads preferably at point located beyond the oppositelongitudinal edge of the brake beam. These hangers 15 and 16 aresubstantially the same length so that when the braking power is appliedor released the brake beam will be held at all times in substantiallyits desired predetermined position,

hangers 15 and 16, being arranged substantially parallel to each other,will cause the brake shoes to move away from the treads of the wheelsinsuc'h a manner as to prevent any part of the faces of the shoes fromII dragging on the wheels, and will maintain the entire faces of theshoes equidistant from;

the tread of the wheels; this it will be'noted is'accomplished by thehangers l5 preventing the tilting of the heads, shoes and beam aroundthe points of connection between the hangers .16 and brake heads, and bythe hangers l6 preventing the heads, shoes and beam from tiltingaround'the points of connection between the hangers l5 and the brakeheads.

Each of the hangers 16 is provided with a member. 18 which is providedwith an openin l9 thrnugh which an extension 20 of the rod 7 is adaptedto extend the opening 19 being large enough to permit free relativemovement or the rod and hangers. This member is adapted to engage withthe rod 7 to prevent undue sidewise movement "of the lever 5 and the rod7. I

It will be apparent to those skilled in the art to which this inventionappertains that many 'minor changes may be made in the construction andarrangement of the parts forming the invention without departing fromthe spirit and scope of the appended claims.

Having thus described the invention What I claim new and desire tosecure by Letters Patent is i I 1. In a brake mechanism, a brake beam,hangers for said beam,'br'ake levers, brake rods connected with saidlevers, and extensions on said rods adapted to extend through saidhangers.

2. In a brake mechanism, a brake beam,

'hangers'for said beam, brake levers, brake prevent excessive sidewisemovement of said rod and lever.

4:. In a brake mechanism, a brake beam, and a plurality of hangers forsupporting each end of the beam, said hangers being connectedwithopposite sides of the ends of said beam.

5. In a-brake mechanism, 'a' brake beam, a plurality of hangers forsupporting each end of the beam, said hangers being con nected with theopposite sides of the ends of said beam and adapted to maintain saidbeams insubstantially its predetermined position as it is moved when thebraking power is applied and when the braking power. is released. I I 16. In a brake mechanism, a brake beam, brake head and shoe connectedwith one end of said beam, and a plurality of hangers adjacent each endof thebeam and pivotally connected with said head, one of said hangersbeing connected with said head adjacent one side of the beam, and theother c0nnected with said head adjacent the opposite side ofsaid beam. I

7. In a brake mechanism, a brake beam, a plurality of hangers adjacenteach end of the beam for supporting the beam, a brake lever connectedwith saidbeam, a brake rod connected with said lever, an extension onsaid rod, and means on one of said hangers adapted to engage with saidextension to prevent excessive sidewise movement of said lever and rod.I

8. In a brake mechanism, a brake beam, a plurality of hangers adjacenteach end of the beam for supporting the beam, a brake lever connectedwith said beam, and means between said lever and one off said hangersadapted to prevent excessive sidevvise'inovementofsaid' lever. r I I I9. In a brake mechanism, a brake beam,

a hanger adjacent each end of the beam for

